vim-patch:7.4.280 #745

Problem:    When using a session file the relative position of the cursor is
            not restored if there is another tab. (Nobuhiro Takasaki)
Solution:   Update w_wrow before calculating the fraction.

https://code.google.com/p/vim/source/detail?r=daf7e98675cf395e1ef96f8040567affb2782a11

src/nvim/version.c

@@ -207,7 +207,7 @@ static int included_patches[] = {
   //283,
   //282,
   //281,
-  //280,
+  280,
   //279,
   //278,
   277,